CN103885435A - Organic amine method desulfuration acid-manufacturing technology distributed control system - Google Patents
Organic amine method desulfuration acid-manufacturing technology distributed control system Download PDFInfo
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- CN103885435A CN103885435A CN201410142989.XA CN201410142989A CN103885435A CN 103885435 A CN103885435 A CN 103885435A CN 201410142989 A CN201410142989 A CN 201410142989A CN 103885435 A CN103885435 A CN 103885435A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
Abstract
The invention discloses an organic amine method desulfuration acid-manufacturing technology distributed control system which comprises a signal collecting device, a controller, a main machine set and a power supply device. The controller is connected with the signal collecting device through an I/O module. The main machine set is connected with the controller. The power supply device provides power for the control system. The control system is of a multi-net-segment structure, each net segment of multiple segments corresponds to a domain address, and the domain addresses are independent. The organic amine method desulfuration acid-manufacturing technology distributed control system is used for controlling a desulfuration acid-manufacturing technology, a control method is simple, operation is efficient, cost is low, system expansion capability is high, subsystem working is independent, maintaining is convenient, and the fact that the system operates safely, reliably and continuously can be well guaranteed.
Description
Technical field
The present invention relates to a kind of control system, particularly a kind of heat-engine plant desulfurized control system, especially relates to a kind of organic amine desulfurization acid-making process Distributed Control System (DCS).
Background technology
In traditional high sulfur coal mine acid-making process, conventionally adopt Wet Limestone Desulfurization technique, absorb the sulphuric dioxide in flue gas using lime stone slurry as absorbing agent, desulfuration byproduct gypsum takes to abandon method processing substantially, but use, the method operating cost is huge, transport pressure burden is heavy.By contrast, organic amine sulfur removal technology operating cost is low, and transport intensity is low, and the market of generation accessory substance is also relatively good, can, effectively by sulfur dioxide recovery, turn waste into wealth.Economic benefit, environmental benefit and the social benefit of amine process desulfurizing item is all highly significant, so in sulphur coal area, organic amine sulfur removal technology is more applicable than conventional wet desulfurizing process.But the features such as I/O is in large scale owing to existing in the at present conventional amine process desulfurization using, hardware kind and quantity is many, complex structure, steering logic complexity, the control system of employing conventional arrangement mode can not meet the effective control to organic amine sulfur removal technology.
Summary of the invention
The weak point existing for prior art, the technical problem to be solved in the present invention is to provide a kind of organic amine desulfurization acid-making process Distributed Control System (DCS), adopt organic amine desulfurization acid-making process Distributed Control System (DCS) of the present invention can solve the problems such as organic amine desulfurization acid-making process system is huge, complex structure, and control is complicated.Use a kind of organic amine desulfurization acid-making process Distributed Control System (DCS) of the present invention to control desulfurization acid-making process, control method is simple, it is efficient, with low cost to move, system extension ability is strong, subsystem work is independent, easy to maintenance, the system that can effectively ensure can safety, operation continuously reliably.
In order to solve the problems of the technologies described above, the controller that a kind of organic amine desulfurization acid-making process Distributed Control System (DCS) of the present invention comprises signal pickup assembly, is connected with signal pickup assembly by I/O module, the host groups being connected with controller, for control system provides the supply unit of power.This control system adopts multisegment structure, and the corresponding domain addresses of each network segment of multisegment is separate between domain addresses, can carry out independent operation to the technique such as desulfurization, sulphur processed, and whole system operation is more efficient.
In system of the present invention, a large amount of exchanges data is controlled in separately carries out in the network segment, between different segment, only exchange low volume data, even if thereby ensure that each segment data communication load also can meet code requirement and have system extension ability the busiest in the situation that, even if the arbitrary system or equipment being connected on data communication system breaks down, can not cause communication system paralysis yet or affect the work of other networked system and equipment.
In gas washing in SA production of the present invention and the conveying network segment, I/O module is two-way redundancy I/O module.Measuring-signal is no longer directly to access standard I/O module on the spot, but first access redundancy conditioning plate, conditioning plate is to each the road measuring-signal receiving, conditioning is output as two groups of (road) redundancy output signals, be connected to respectively again two standard I/O modules, formed redundant input, the principle of redundancy output therewith roughly the same.The configuration of redundancy I/O module and configuration have reached the monitoring requirement of relieving haperacidity chemical process completely, make to introduce chemical process flow and become a reality in electric power generation system, for electric power and the chemical industry mutual fusion of monitoring function are between the two laid a good foundation.
The quantity of above-mentioned multiple network segments is three, is respectively the desulfurization main flow network segment, the water treatment network segment and gas washing in SA production and the conveying network segment.Three network segments are three territories, distribute to different domain addresses, thereby make between each territory separately, and a territory goes wrong and can not affect the work in another territory.
The desulfurization main flow network segment, the water treatment network segment and gas washing in SA production and the conveying network segment comprise respectively multiple independently groups, and each is independently organized a set of independently signal pickup assembly of interior each outfit, I/O module, controller, communication line, power supply and controls rack.Separate the carrying out of working between group and group, makes manipulation and safeguards convenient, Yi Hang.
In each network segment, be equipped with an engineer station.Each performs its own functions for each engineer station, more strengthened the independence of different segment work.
The organic amine desulfurization acid-making process that Distributed Control System (DCS) is controlled comprises oxygen ozone process, Distributed Control System (DCS) is included in control to oxygen ozone process in, make a whole set of desulphurization system can adopt unified hardware, software and configuration method, thereby the kind that has greatly reduced standby redundancy effectively reduces operation expense in the future, also reduced operation maintenance workload simultaneously, training also becomes simply, and operation person can very fast manipulation on duty.
The sweep frequency of oxygen ozone process control is 100ms.It is very frequent that in oxygen ozone subsystem, some valves switches action, the controller scan period required high, in DCS configuration, establishes independently DPU and its scan period is brought up to 100ms for this subsystem, and other DPU still adopts the normal scan cycle.Adopt identical control method, take different sweep frequencies further to simplify control program for different subsystems, raise the efficiency, cost-saving.
Adopt a kind of organic amine desulfurization acid-making process Distributed Control System (DCS) control method of the present invention simple, move efficient, with low cost, system extension ability is strong, subsystem work is independent, easy to maintenance, the system that can effectively ensure can safety, operation continuously reliably.
Brief description of the drawings
Fig. 1 is the system diagram of a specific embodiment of the present invention;
The two-way redundancy I/O module schematic diagram of a specific embodiment of Fig. 2 invention.
Embodiment
Below in conjunction with accompanying drawing, a kind of organic amine desulfurization acid-making process Distributed Control System (DCS) of the present invention is described in detail.
Referring to Fig. 1, the controller 8 that a kind of organic amine desulfurization acid-making process Distributed Control System (DCS) 1 of the present invention comprises signal pickup assembly 10, is connected with signal pickup assembly 10 by I/O module 9, the host groups being connected with controller 8, for control system 1 provides the supply unit 7 of power.This control system 1 adopts multisegment structure, and the corresponding domain addresses of each network segment of multisegment is separate between domain addresses, can carry out independent operation to the technique such as desulfurization, sulphur processed, and whole system operation is more efficient.
Preferably, be first divided into three process control network segments (territory) according to process system flow process: the desulfurization main flow network segment 2, the water treatment network segment 3, gas washing in SA production and the conveying network segment 4.Three network segments are three territories, distribute to different domain addresses, thereby make between each territory separate.And then further grouping in each independent domains, for example in the desulfurization main flow network segment (territory), be divided into again independently three groups by synergic system again, the a set of independently signal pickup assembly 10 of the interior each outfit of each independent groups 5, I/O module 9, controller 8, communication line, power supply 7 and control rack can be accomplished not interfere with each other between each territory and each group on controlling.
In system 1 of the present invention, a large amount of exchanges data is controlled in separately carries out in the network segment, between different segment, only exchange low volume data, even if thereby ensure that each segment data communication load also can meet code requirement and have system extension ability the busiest in the situation that, even if the arbitrary system or equipment being connected on data communication system breaks down, can not cause communication system paralysis yet or affect the work of other networked system and equipment.
With reference to Fig. 2, as one embodiment of the present of invention, in gas washing in SA production of the present invention and the conveying network segment 4, I/O module 9 is two-way redundancy I/O module.Measuring-signal is no longer directly to access standard I/O module on the spot, but first access redundancy conditioning plate 11, redundancy conditioning plate 11 is to each the road measuring-signal receiving, conditioning is output as two groups of (road) redundancy output signals, be connected to respectively again two standard I/O modules 12, formed redundant input, the principle of redundancy output therewith roughly the same.To the redundancy RTD signal of Application and Development not yet, adopt first conversion again the method for access solve, access again redundancy AI module after first RTD signal being transferred to standard A I signal, thereby reach whole redundant configuration requirements of chemical industry.
The configuration of redundancy I/O module and configuration have reached the monitoring requirement of relieving haperacidity chemical process completely, make to introduce chemical process flow and become a reality in electric power generation system, for electric power and the chemical industry mutual fusion of monitoring function are between the two laid a good foundation.
As another embodiment of the present invention, in each independent network segment, be equipped with an engineer station 6.Each performs its own functions for each engineer station 6, more strengthened the independence of different segment work.An engineer station 6 is established in conventional desulfurization, and is connected in network side by side with operator station, once communication system fault, engineer station can not carry out its function.In the present invention, each network segment is respectively established an engineer station 6, and changes into and transfer to process control station on network connects, and is directly connected with process control station, even if supervisory layers breaks down like this, engineer station still can normally complete its systemic-function.
As another embodiment of the present invention, the organic amine desulfurization acid-making process that Distributed Control System (DCS) 1 is controlled comprises oxygen ozone process, and the control of oxygen ozone process is included in to Distributed Control System (DCS) 1.Conventional power plant desulfurization water treatment portion is only Waste Water Treatment, and the present invention is the newly-increased filtration of amine liquid, APU and demineralized water subsystem again, and wastewater treatment removes common process and increased again oxygen ozone subsystem newly.These newly-increased subsystems got used to adopting PLC system monitoring in the past, this project all unifies to include in DCS monitoring by each subsystem, cancel PLC, make a whole set of desulphurization system can adopt unified hardware, software and configuration method, thereby the kind that has greatly reduced standby redundancy effectively reduces operation expense in the future, also reduced operation maintenance workload, training also becomes simply simultaneously, and operation person can very fast manipulation on duty.
In the present invention, it is very frequent that in oxygen ozone subsystem, some valve switches action, high to controller 8 scan periods requirement, adopted PLC to realize monitoring in the past always.The normal scan cycle of DCS controller (DPU) is 500ms, and the present invention cancels after PLC, in DCS configuration, establishes independently DPU and its scan period is brought up to 100ms for this subsystem, and other DPU still adopts the normal scan cycle.After putting into operation, between each DPU, do not produce conflict, stable, realize the control requirement of instrument factory.The present invention adopts identical control method, takes different sweep frequencies further to simplify control program for different subsystems, raises the efficiency, cost-saving.
Organic amine desulfurization acid-making process Distributed Control System (DCS) 1 of the present invention is first divided network structure the independent network segment to divide group independently again, peripheral workshop is adopted to the collocation method at Long-distance Control station by technological process, making arbitrary network segment fault all can not affect other network segment normally works, while making arbitrary stove desulfurization fault, do not affect the normal operation of another stove desulfurization, arbitrary row relieving haperacidity fault does not affect the production of another row relieving haperacidity.Effectively ensure system energy safety, operation continuously reliably.
An engineer station 6 of the each configuration of each network segment, to so huge desulfurization DCS of I/O scale, give prominence to debug process convenient, fast, effectively and aspect not interfereing with each other, be also convenient to very much adjustment and the maintenance work of process system in the future or DCS system simultaneously.
The water treatment system also unified DCS that adopts is controlled without PLC, make a whole set of desulphurization system can adopt unified hardware, software and configuration method, thereby the kind that has greatly reduced standby redundancy effectively reduces operation expense in the future, also reduced operation maintenance workload simultaneously, training also becomes simply, and operation person can very fast manipulation on duty.Adopt a kind of organic amine desulfurization acid-making process Distributed Control System (DCS) of the present invention 1 control method simple, move efficient, with low cost, system extension ability is strong, subsystem work is independent, easy to maintenance, the system that can effectively ensure can safety, operation continuously reliably.
The present invention is not limited to above-mentioned embodiment, and the system that every employing is identical or approximate with the above embodiment of the present invention, and other the organic amine desulfurization acid-making process Distributed Control System (DCS) obtaining, all within protection scope of the present invention.
Claims (7)
1. an organic amine desulfurization acid-making process Distributed Control System (DCS), the controller that comprises signal pickup assembly, is connected with described signal pickup assembly by I/O module, the host groups being connected with described controller, for described control system provides the supply unit of power, it is characterized in that, described control system adopts multisegment structure, the corresponding domain addresses of each network segment of described multisegment, and described domain addresses is separate.
2. an organic amine desulfurization acid-making process Distributed Control System (DCS) as claimed in claim 1, is characterized in that, the I/O module of gas washing in SA production and the conveying network segment is two-way redundancy I/O module.
3. an organic amine desulfurization acid-making process Distributed Control System (DCS) as claimed in claim 1, is characterized in that, the quantity of described multiple network segments is three, is respectively the desulfurization main flow network segment, the water treatment network segment and gas washing in SA production and the conveying network segment.
4. an organic amine desulfurization acid-making process Distributed Control System (DCS) as claimed in claim 3, it is characterized in that, the described desulfurization main flow network segment, the water treatment network segment and gas washing in SA production and the conveying network segment comprise respectively multiple independently groups, described each independently organize a set of independently signal pickup assembly of interior each outfit, I/O module, controller, communication line, power supply and control rack.
5. the organic amine desulfurization acid-making process Distributed Control System (DCS) as described in claim 1 to 4 any one, is characterized in that, is equipped with an engineer station in described each network segment.
6. an organic amine desulfurization acid-making process Distributed Control System (DCS) as claimed in claim 1, it is characterized in that, the organic amine desulfurization acid-making process that described Distributed Control System (DCS) is controlled comprises oxygen ozone process, and the control of described oxygen ozone process is included in to Distributed Control System (DCS).
7. an organic amine desulfurization acid-making process Distributed Control System (DCS) as claimed in claim 6, is characterized in that, the sweep frequency of described oxygen ozone process control is 100ms.
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Cited By (1)
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